Copper antimony sulfide (CuSbS2) mesocrystals: A potential counter electrode material for dye-sensitized solar cells

• Uniform mesocrystals of CuSbS2 have been prepared by a simple hot injection method.
• CuSbS2 mesocrystals are used as a replacement material for platinum as counter electrode in dye-sensitized solar cells.
• The performance of solar cells using CuSbS2 is found to be comparable with that using platinum counter electrode.

Dye sensitized solar cells are commonly fabricated using expensive platinum as a counter electrode material. We demonstrate for the first time the use of CuSbS2 as a replacement for platinum in dye sensitized solar cells. The performance of solar cells using CuSbS2 is found to be comparable with that using platinum counter electrode.